I used MS Excel 2010.

Don't know if it makes a difference with DepositPhotos or not, but I try to upload a minimum of 5 images per week. Maybe that makes me more visible? Just as it used to be with Shutterstock, that you had more sales if you upload on a regular bases.

I would say so too. Always start with the top earner first and then work your way down, but ...

you may also include all the mid and lower earner that have FTP upload. Why? If you only start with the top right now, you take your image the first time in you hands, in a few month you 2 more agencies, and you take the same images again in you hands and upload then, 2 month later ... you get the point. It takes time to upload the same images over and over again.

I use in the moment http://lightburner.com/ to upload my images to most of the agencies I work with ( List of agencies I work with (list is re-sorted every month by income)). With this I have one upload and LightBurner does the upload to the agencies. Big time saver. Then I have all my agencies bookmarked in the browser and opening the on different taps at the same time. Now I go though every agency and submit the uploaded images. (if you don't like Lightburner there are other option out there, like CushyStock, ProStockMaster, FileZilla, PicWorkFlow ...)

Well this system only works if you upload in small increments of image every time. If you produce like 50 or more images per week then it maybe better to stay only with the biggest 6 agencies. That is something you have to try out.

In the moment I actively upload to 28 agencies. Take a look at my pie charts at http://stock.hlehnerer.com/Stats.html Which one should I drop? Yes quite a few low earners, but then there are the times where these spike, and all the time spend is then paid for (well...). Take for example Zoonar, low earner but in March I had a pig spike with 3-4 well paid sales. I also submit to StockFresh, a non-earner in the moment. But they are the maker of StockXpert, so they know what they are doing. Will they ever take off? I don't know, but I think they have a good change. And when they do, I want to be part of it. The newest agency I started uploading is Photodune. Why did I started uploading there? Because they have already an established customer base with their other outlets. So there is a good potential of income. But only time will show.

There is also the problem that it becomes increasingly more difficult to get at some of the big agencies images accepted. And you do need to get an portfolio established with them to have sales.

Hmmm... more to think about for you now. Well, I with you good luck!

Is you portfolio size equal compared to Shutterstock or Dreamstime?

GDUSA Reader Survey Reveals Strong Support for President Obama, a Belief That Old Age Begins as Early as Age 45 and Continued Growth in the Use of Stock Imagery Among Designers
You can read the full article at http://microstockinfos.blogspot.com/2011/08/gdusa-reader-survey-reveals-strong.html

iStockphoto is the favorite/go-to microstock agency

    50% of designers who have a preference use iStock


Designers use a mix of rights managed and royalty free images

    Rights managed � 32%
    Royalty free � 93%


Designers spend more total dollars on royalty free images

    Rights managed � 6%
    Royalty free � 81%
    About the same � 13%


Designers use multiple stock sites

    Use only one � 11%
    Use 2-3 � 47%
    Use 4-9 � 31%
    Use 10 or more � 11%


Top 5 categories of images used most often

    People
    Business/industry
    Lifestyle
    Abstracts/backgrounds/concepts
    Food and Beverage


Publications doing the best job at extending print design to online platforms

    Wired
    Martha Stewart
    New York Times
    Oprah
    National Geographic


Believe ageism begins to manifest itself in the design agency business

    At age 55 and up � 26%
    At age 50 � 34%
    At age 45 � 30%

It is vacation time in Germany. I think you probably can expect longer review times until the beginning of September. At least that would be my guess.

It doesn't looks like to me that BigStock is exuding POD in its EL license.
http://www.bigstockphoto.com/licensing-tos.html

Also 123rf looks like to include an EL license that would alow the use in Zazzle

Privacy And License
...
3. What is Extended License and when do I need one?
Extended license covers use for Design Templates for resale (Web and/or Print), Prints for Resale Poster, Greeting Cards, Prints on Merchandise for Resale (mugs, stationery, t-shirts, etc), Design Elements on Software for Resale and any other Derivative Resale Objects. Each extended license is applicable for (one) image.
...

http://www.123rf.com/faq.php

These are for me the best 4 performing stock agencies for June 2011:

    Shutterstock
    DepositPhotos
    StockXpert
    Dreamstime



You can find the rest of the statistic here.

I started a while ago a Squidoo lens on how to promote a Zazzle store.
http://www.squidoo.com/how-to-promote-your-zazzle-store-

Reflex Stock and IngImage are partner site of ... ( can't think of it right know, but I know I was just recently reading about it ). Try searching for your images, they maybe already on their site..

I started with them 12/2009 too, and have basically starting 02/2010 almost every month increases in sales. Looks like they can stand their position in my Top 6 agencies. I have nothing to complain about them. Fast and easy upload. Fast approval time. Not to many rejections. Excellent for a new site.

I only see approved images too in this list.

Also would it be possible to make the "Media File - Portfolio View" sortable by upload-date, views, download, increase and decrease?

I think if you do well at BigStock then you will do OK at Panthermedia too.
Deleting your an image is, at least for me, not a problem. There is even an select all button at the top.