I guess if the post has a "lol" or few "lolz" then it is quite possible that the post is mine...
If it is a long post with NS and Immi bashing, then it is quite possible that the post is saleem's
If it is about mushy and altaf bhai bashing, then it is spockie,
If the post has an islamic moral lesson or story, most probably it is Submission of Life
If the post had too many colors, upper case letters, and bold undelined words without any reason then it has to be Arjay uncle....
sorry I don't know much about the normal guppies....
LOL! :D