QRP spots via APRS and Twitter

QRPspots is a popular site for low power operators to let people know who's active. Spots can now be posted by APRS and Twitter as well as via the website

In an email VA3SIA explains how to use it via APRS messages, he writes:

Just send an APRS message to callsign 'QRPSPT' it can be in any format as long as there's a callsign and frequency in there somewhere.

So, these all work: (in this example from VA3SIE).

7042
Gets posted as VA3SIE spotting VA3SIE on 7042kHz.

Just heard VE3WMB on 14.063MHz
Gets posted as VA3SIE spotting VE3WMB on 14063kHz.

Terry WA0ITP @ 3560 khz
Gets posted as VA3SIE spotting WA0ITP on 3560kHz.

QRP Spots
http://www.qrpspots.com/

Twitter QRP Spots
http://twitter.com/QRPSPOTS