"Here's an alternative viewpoint," in chatroom lingo

• However, in a tweet
• Texter's "Then again ..."
• Texter's "Alternatively ..."
• Second-opinion introducer
• "Then again," on Twitter
• "However, if u think about it differently..."
• Internet shortening to introduce a different view
• "Then again," in tweets

Wiktionary Word definitions in Wiktionary
init. (alternative case form of OTOH English)