I've been reading weblogs for quite some time.I've seen so many tech guys getting frustrated by the response of the readers they get on their weblogs.Most of programmers with tech blogs posts howtos and other article stuff,which is very good thing for building internet.They are constantly being hit by Leechers.So you'll ask me what are leechers?

leechers are guys/gals out there hunting for the answers for their questions.They'll ask tech guys for the answers these ways:
1. "Hey send me the fibbonaci sequence program".
2. "Hey send me any good book on linux on my email address"
3." Send me link to download for the warez"
Some people try and act like begging:
1."Hey please help me send me the answer to these programming problems in C"
2."Hey please help i m in trouble i need xxx/yyy software ?"
3."Hey i'm student and i can't do the programs in C please help me out do this homework".

Sometimes they sound like ordering or rude while making commetns.
1" Hey,send me link to warez software site?
2. "Hey send me some library automation program in java,fast,NOW".

Sometimes they do invest time in you,make friendship just to get their purpose out of it.It's really hard nowadays to differentiate between leeches and good guys.Asking for some tutorial and howto can be good idea usually to ask for help but asking for readymade programs that does the homework is lame.Sometimes they don't even appreciate you if they get help from you.If they are not maintaing any sort of readership with you then whats the point in having the readers or visitors to your site.

My observation on weblogs for filtering leeches:
There are some tech guys like kirupa chimathambi from kirupa.com who sorted out this problem by placing moderator on his site for filtering out such leech.Paul stamatiou from pstam.com filters out such comments instantly.On the other hand our member "Mahesh2k" unable to filter out leech comments on his site onecore.net His site is being attacked evryday with leech request of more than 120+ leech comments.One of my friend who works for d2design derivative have same problems as some customers call for the design ideas and waste valuable buisness time.Trap17 free hosting site kicked out many users from their forum for such leech behaviour.

Everyone have their own life & need to maintain balance but asking for custom content or program that gets the time of programmers.Which is more valuable than any such leechers lifetime.Asking for help when you get stuck is good thing but leeching & not appreciating for help is really bad thing.There are ways to ask for help and get your answers but if you're only interested in your job getting done.You get many people arround you,asking for free-advice or content from when you start asking for the charge they all disappears.

How you'll handle such leeches in real life or on your tech blog?

Well i think software like glade or kdevelop have some restrictions why not RAD tool like delphi in linux?
it could run on wxwisgets.But should have no restriction like QT.