I switched to digital Dec 2002 and to D-SLR March 2006 but didn't start contributing to the Microstock until Feb 2006.

Anyone care to share?

July 2006 is when I found Shutterstock.  Since then, started contributing to Dreamstime, iStock, FeaturePics, Fotolia, BigStock, and 123RF.  Waiting to find out if my StockXpert application goes through.

Started with DT, IS and 123 at the end of June.  FT in July, SS in November and BigStock just last week.  I too just started out with my travel photos but am trying to get out there and shoot everything   

I started contributing about 6 months ago , but interesting that 6 or 7 months before that I bought my first camera and took my first photo ever , I don't recall I pressed the shutter ever before , maybe at some birthday when I was kid or something. I just hated when I had to smile in front of the camera and kept myself away from them. But i just love trying new stuff , so I used to paint allot , i play guitar and blues harp and stuff like that. One day I  was surfing through some photos and I saw some Bressons work. After I saw that kid with a bottle of wine photo I decided  that tomorrow I will buy a camera and start shooting. So I did , i bough Sony W-17 and started pressing the button like mad , i took few hundred photos first day , and they all sucked. So i decided to learn something and joined some photo community and i read 1000 of tutorials and posts,questions and answers etc , and one day I saw some topic about stock. Well there was a link to Scandinavian stock photos , and I join there first. I dont remember the order I was joining other sites but it was something like sites with more sales and potential at the end

Well thats my story , I went a little out of bounds as the question was when did you start microstock but maybe someone is is bored and likes to read allot so ...   
         

February 2nd 2006, SS was my 1st site.
My son strongly encouraged me to submit and to learn, and I got hooked...  he used to submit (portrait photography), but doesn't have time to do it these days.

Yes he did 

I started Dec 2005 with IS and DT. Found FL, BS and SS soon after. But had to wait 3 months at SS 

After the first excitement (first 2-3 months, approx. 150 photos) I took a break for about 2 months as I found things very slow. But then I was accepted at SS. And in the first month I made as much as on all other sites combined.

Recently the growth was slowing down a bit again, but now it was IS increasing in sales. Passed 500 DL early Dec.

well i was wondering the same

Dreamstime was my first site and I uploaded March 30, 2004... so in a few months it will be 3 years online .  It doesn't seem like that long.  Istock was shortly after that, i guess since it takes a while to get accepted there. 

july 2006 - sept 2006

Hurro,

I joined IS after reading about it on www.dpchallenge.com back in September 2004.  Not long after I switched to Digital as it happens, which was about August that year, give or take. I got a P&S digital in May 04, and sold all my 35mm flim gear in August 04 to pay the deposit on some lenses for my 20D.

I was quite sceptical of the Micro thing, and I was really busy anyway, so it wasn't until April 2005 that I uploaded anything for approval.

Since then I've joined SS, DT and FL.  I also submitted to 123rf for a while, but after very slow sales and odd rejections I gave up on there.

I've just done my initial submission at Stocxpert, and got an email asking for more sample images, problem is I can't remember what I submitted first time round! :-).  Ahhh well.

This is very part time for me, and I've only got a portfolio of around 300 images (Depending on which site you're talking about).  I keep on telling myself I should shoot more stock, but I never quite get around to it. :-).

The micros have paid about 25% of the finance payments on my studio lights though, so I'm not complaining.

Happy 2007. :-)

August 2006 and I am completely hooked.