The admin has made a categorical list of reliable sites. Many could be added (InshaAllah).
Note: A site may fall under ‘more than one category’ due to its multiple contribution.
Sites worth Reading
www.jaamiahamidia.wordpress.com
Sites on Self Reformation/Tasawuf/Tazkiah:
http://anonahouse.blogspot.com/
http://tasawwuf.daralmahmood.org/
http://www.islamicspirituality.org/
If you are looking for Question-Answers/Rulings/Masala/Fatawa:
http://www.idauk.org/dawah/fatwa.html
Islamic Sites on Bayan/Lectures/Audio/Video/Nasheed:
www.youtube.com/user/hanafifiqh
http://www.halaldawarecords.com/
http://www.idauk.org/dawah/audio.html
www.jjamshed.com (mainly nasheed)
Islamic sites for eBooks:
http://www.4shared.com/dir/2558485/69a1dbdd/sharing.html
http://attahawi.com/english-books/
Islamic Heritage:
Islamic Sites from/for Bangla speaking people:
Islamic Sites publishing News:
Forum on Islamic Issues:
http://www.muftisays.com/forums/
Useful Islamic Sites/links for New Muslims
http://www.muftisays.com/nti.php
http://www.talimiboardkzn.org/Books/A%20Practical%20guideline.pdf
Biographies of The Pious
http://www.central-mosque.com/biographies/index.htm
Sites on Dua/Supplication
http://www.islamawareness.net/Dua/
http://www.sunniforum.com/forum/showthread.php?70480-Supplications-for-all-occasions
Sites on Dawah/Invitation
http://www.rightfulreligion.com/
http://www.jews-for-allah.org/
http://engagersindawah.blogspot.com/
Sites enriched with various topics:
http://www.classicalislamgroup.com/
http://www.inter-islam.org/A-Z/A-Z.htm
Sites in Urdu OR enriched with Urdu Materials