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Just Copy and paste the special character in your twitter message.

1. ♥ ♥♥♥ ♥♥♥♥♥
2. †
3. ‡
4. ♠
5. ♣
6. ♥
7. ♦
8. ←
9. ↑
10. →
11. ↓
12. ™
13. <
14. >
15. ¡
16. ¤
17. ®

Cool free signs that you can use for your messages on Twitter. Just Copy and Paste them into your short Message on Twitter. The Signs are also cool to use for Youtube Video titles or other postings.