It has been 12 years since 2-channel serves Japanese net users. The gigantic anonymous bulletin boards are still kept simple without image/movie, all you type is texts.
You may post URL of images there, and many 2-channel viewer clients, which many users are now using, extracted to display in the posts for convenience. But still, many prefer to use so-called Ascii Art, drawing composed by letters and symbols.
There are a lot of Ascii Art dictionary sites (example [J]) and assisting tools. 2-channel users copy and paste an Ascii Art which shows their emotion.
On a certain thread on 2-channel, users tried to make an animated gif version of well-known Ascii Arts.
Here, the Japanese letters “Ban-ban-ban” in background means a sound you bash not PC.
バンバンバンバンバンバンバンバンバンバン
バン バンバンバン゙ン バンバン
バン(∩`・ω・) バンバンバンバン゙ン
_/_ミつ/ ̄ ̄ ̄/
\/___/ ̄
Wake-waka-ran = I am in complete confusion.
ワケ ワカ ラン♪
∧_∧ ∧_∧ ∧_∧
( ・∀・) ( ・∀・) ( ・∀・)
⊂ ⊂ ) ( U つ ⊂__へ つ
< < < ) ) ) (_)| (_(_) (__)_) 彡(__)
whew… uh.. yeah… I am really excited!
∩___∩三 ー_ ∩___∩
|ノ 三-二 ー二三 ノ ヽ
/ (゚) (゚)三二-  ̄ – 三 (゚) (゚) |
| ( _●_) ミ三二 – ー二三 ( _●_) ミ ウオーオォーアッヒャアウオホーオオオ
彡、 |∪| 、` ̄ ̄三- 三 彡、 |∪| ミ テンション上がってきた!!
/ __ ヽノ Y ̄) 三 三 (/’ ヽノ_ | テンション上がってきた!!
(___) _ノ ヽ/ (___)
These animation show well how Japanese are seeing action in few texts drawings.
There are more on a 2-channel summary site Kinisoku [J].