The Wayback Machine - https://web.archive.org/web/20090126222937/http://www.decodeunicode.org:80/U+FB29
EDIT The reason it is used in Israel, is that the regular plus sign (+) looks like the christian cross.
 
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PLUS SIGN
U+002B
PLUS SIGN
SUPERSCRIPT PLUS SIGN
U+207A
SUPERSCRIPT PLUS SIGN
FOUR TEARDROP-SPOKED ASTERISK
U+2722
FOUR TEARDROP-SPOKED ASTERISK
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U+FB29 HEBREW LETTER ALTERNATIVE PLUS SIGN
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