気をっけて - Why the small っ?


I'm currently viewing a bunch of tweets about Typhoon Jebi in Kansai, and I'm
seeing a lot of people writing 気を[っ]{L}けて specifically with a small っ.

  * Is this just some type of stylization? If so, what kind (internet; young people slang; danger emphasis; etc.)?
  * Or is this the case of some special usage like I talk about in this [question about 障がい者](https://japanese.stackexchange.com/q/24810/78)?

