Useful Links (Thanks to vishi)

http://www.getjar.com/
http://www.lasyk.net/
http://www.mobile9.com/
http://www.esato.com/
http://www.zedge.net/
http://eseth.net/ (Theme specialist)
http://emobilez.com/
http://www.segoodies.com/
http://www.mobileheart.com/
http://www.mobimaza.com/
http://www.funmaza.com/mobile_mania.html
http://www.mobilejunkies.net/modules.php?name=Downloads

Animated Wallpapers / Screensavers with your name flashing:
www.reddodo.com
http://www.imagechef.com/

Latest Mobile Handset Prices India:
http://www.india-cellular.com/Handset-Prices.htm
http://www.fonearena.com/mobile_phone_pricelist.html

Mobile Reviews/Info/Snapshots etc:
http://www.gsmarena.com/
http://www.mobile-review.com/review-en.shtml
http://www.mobile-phones-uk.org.uk/
http://www.techtree.com/techtree/jsp/home.jsp?up2cat=52

Ringtones:
http://www.iwfr.net/
http://www.nokia-mobile-tones.com/ (Ringtones and videos)

Instant messaging tools (For mobile & PC):
http://www.instango.com
http://www.nimbuzz.com