Twitter for Birders

Gunnar Engblom has another hit: Twitter for birders - Part 1. An introduction - which starts introductory enough, but I am intrigued by the last sentence:

In part 2 of "Twitter for birders" I will tell you how something called hashtags will revolutionize birding and make all bird alert services obsolete in a near future.

Can't wait to see what it really means....

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