There are way too many people on this forum for you to be singled out. No offense, but I don't even know you so I couldn't possibly be purposefully ignoring your topics.
Look at this:
http://www.pokecommunity.com/showthread.php?t=291373
That question has been asked too many times for comfort, not many people are gonna answer a thread they already have, probably multiple times in the past.
This:
http://www.pokecommunity.com/showthread.php?t=288154
It's a good idea, but it doesn't exactly appeal to that many people, so it eventually died out.
Bottom line is, you aren't being singled out, your topics are simply and honestly not too interesting to warrant attention. I say that in the utmost respect cause I have no idea how else to put it, but it's not like you can beg people or force them to reply to your threads. Before posting a thread, think it out as well you can, make an interesting topic, and when you post it, try using proper capitalization, punctuation, grammar and so forth, so that people actually feel like reading it to begin with...
Also, try to make sure that your topic hasn't been asked multiple times in the past. Due to the size of PC, a lot of topics are kinda cliche right now, so uniqueness is something you might want to take into consideration as well.