Lol thats funny 2 posts for me as well, althoguh the reason given there isnt clear its probably closer to the truth than what i told the person who pm'd me, on the other i meant its on the site not in the real world, i wouldnt ave passed english at school had i always done it
Maybe ill type the various reasons out one day but until then it will have to just be mysterious lol
Ok heres the skinny, i could say the full stop key was broken on an old pc and i just got used to it or i could say its because my fingers dont naturally go to the full stop and instead prefer the comma, i could also say its beacuse i never believe ive finished talking, a full stop is so definate a comma allows me to add somthing afterwards in the next post but really i think its because i use a comma a lot to break the sentances up and when i started on here i just started to end them with a comma instead of a full stop as it looks better, either way if looks better or if its just because i never feel ive finished talking it has been the subject of a few discussions elsewhere as well and it makes me smile how long it goes un-nonticed, 
Skype: Akimies