sniperwolf

Here are few sites which you may find good enough:

cLICKpRESS
wEBwire
Emediawire
Businesswire
PRwebdirect -
TheOpenPress
Free-Press-Release
Pressbox
i-Newswire
PR9
PR-Inside
NewsWire
PressReleaseNetwork
Market Wire
URL Wire
PRweb (small contribution)
PR Urgent
PR Leap
PRNewswire
PR Free
OpenPress
SoftPressRelease

Most of them are free PR submission Sites.

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