I tried the letters Aja extracted from the poem
Aja wrote:HJMSMWPJYHMPPTFTMPCAESPASPAECTLLATWK
to vigenere decrypt the gobbledygook from Craigs list and got - you guessed it, more gobbledygook!
ZHNNDGKSVGGFTNKYAZWRGEHHDVUZNKPASMZHAPJGXYTAPFVJXFNMNXXEHODMHMAGIASTMOWNWXTSTAGD
MNXFNVWXGEQODZOZHGPALTTQWPWKRLTANWZJXYWTUKELHODMUTHEPAYZTOANJXRLZATWTAXHUTWRXEHQ
MZHZAGVCUVMHUGWGTUMTGWMAKHAZWRXEHHQVQMAGRTYMMHNGJGKUTCPFTNEFUVATXRUHQTOTNXPASTZO
NTFXXSTGNWVHKYNZAXXRQOMZOZAKVGLMTQUGFKRSVTTJTAGYWTUTERQUQMOTNEICUMMUUTDKKLMTPJVJ
GHATUXELQUDMQMJGPALZTHANJGRUMTGWTHELNMWKKNHODZHZNGVCYZMONGDXTUVGGJMAKFWZWTKRUQKT
UTNGPAUMVUAGFKTUZCNWTJEHNTNKGEQOQTOMNERTLZZHNTDKKSVTPDVJELNVUTEROOKTUVHXRTLTVUAN
WKXUTTTDVHKYUTARKLOHDTHZJEVTYVMUWPDXRSVCNWZHKYATNRENOQDZQZNGRASVMHUPWXTLZAPDTJKF
NVAXERUOMVUTHKVAYVMOUPFKTLMTGWMNGFWTUTEEUUQZUTAGPTYMTOWGFKTUMTTDMJKYNZAXELQQQZOZ
JXVASMZOUTFGRLTCPDTHGLUVARKNUHQTQTJGPCYTMUWPWKKSZCNDMNKHUTWRENUHDZQZJEPAUMTHNNDG
KYZCTDTJXFWMNRGEQHKZQMAGRCYZVOUPDEKLTAGDZHGYAZUKKROUQVUZHXPASZMHAPDKXSVCNFMAGYAV
ATXNUUMVQMAGRGYVMUAPWKXLMTNWMNGYATNRELHQDZUTNGRGYMZOAPJXXYZTPWVNGLAMUKGLHHQVOZJE
RTYZZUWPDKRLZGGDTNGHWMWTGRHODVUMHKITSMVHUPDGXSVGTJZHKYWTAXGLOQDTHZNEIGSTVUUNDXRY
TCNJTAGLWMARKLHOQZHZJGICSVMUUGWERYVAGWZNXFUVNXXNOUKVQTHKITLTVHWNWEKSMAPWMAELUMNX
EEHHKVQVJKVTLZTHUNWGRYTANDZJGHWTURELQOQZOTNEITYMTHUNJGRSTTNWMAEFUMNXXLOOMZHMHEIA
LMMHAGWERSTTGFZJKYNTURXEHHDZHMHEPTUTZQNPDXKLMTGDTJGFUMUXKNQUKTOMJKVCSTTONPFGKLTT
NDTAGFUTUXELHOQVQVNEVALTZUAGWKRYMGGWZAXHWTAKXEUUKTQTHKPGLVVOWGDXKSTATDTJKYAZUTXN
QOKVUMJEPAYZZQANDERSVCTWVAEYWTAXKNUODZUVJGPCLTVUNTDETUTTPDVJGFUTNTELUHDMHMAKVGYM
VUUTJXXUVGGDTHKHUVNRELHQQZOTJGRTSTTUATDKTUVCPJTAXYUZUXGEHUKVUZNKPASZVUUNFKKYZCTD
ZHEFAZURKRUOKZOTHKRGSTTUANJGXYZCTFMHKLAVATXRUQKTUMNXPGUZZHWNFKTLZCTFZAEFWVUTGLQO
MVQZJGVCYVMHUNWKTYVCTFMHGFAZATKNUHKTOTNKPTUMTUAGJERYTTPFMAXYNZUKELHQDVOMNERCSTTO
NPFGKLTAPJMNELNMNKGRHHMVOVAKPGUZMQUTDGTUVGGDZHEFUZUKGLOOQZOMJXICLMZOANWGTLMTGWMA
GYAVATKEOODVHZJXVCLMZQUNDGRSTANDTJGFWVATXLQQKZQZNXVGLMMUNGWKTUZGNWVHELUZWKENQOKV
HVAXITLVVUUNJKKSTCGJZJXYWTATEROUMZQTNEIAUVTOUGDGKYMTPWMJXFAMAKERQQQMOZAXPGYVVOWP
DGKLVANJTHGYWMAKERQOMVUVJXPCSMTQWGFKTLVTTFMHEYWVNXXEOQMTUMNKRTYVMUWPDKKYZCTDMHEL
NVAKKEQHDTQVNKVTLZZOWGFERYTCTDMHKYNTWTKROHKTUZJKRAYVZUNPJKXUMGNDVNKLAZAKXNUHQVOV
HGPGUVVOAPWXXYTGPJTHGLUVWKENOQMZOTJXVAYTMOWPWETSZCTWZHKHNTNXEROOKZQZJGPCYVMHWPFK
RSZGTDZHEFAZWXKLQOQZHTAGRGYMTOAPJKTSZGTWVNKFUVUXKLUOQVUVHGVAYZZOAPWXTUTGTJZNEFUV
ATGEUUDTHVAXIALTZHWPWKKUZGTWMAGLWVUTGEQHQTQMAKPGUZMQANWXKLMGGJTAKHNVAKGLUUQZUZJK
VAYVVHUGJKRSTANFZJGFAVURGRQUQVQMAXITSVZUNGFGKYZCPWMAXLWMAXGNHHDMUVAGPCSMZHUNWKKY
TGGWTNGYWTWKGLHHKZUVHGRCUTZUWGWXRUTCGWMHXLWMNTGRUQDVUMHXVTLZMUNTJERLMGGJTNGLATNR
ENOODMHVHGPCSZZOUNFEXUMAGJTJGFNZUKXLQUMVOTNGIAUZMOUGDGXSVTPDVAEYUZAXGLUODVHMJKPA
LZVONPJGXUZCNFVNXFWZNTXNUOQZOTAXRTSVMUWGFXXLMAPWVAXYAVNRGLQHQTQTAKITLZMUUTWKRSTC
NFTHEYWMAXGNHOMTHZJERALVVOUNJETSVATWTNKYWMURENOQKTOZAXPGLZMHNTWETSZTPDVHXHAMNKGE
QODMUMJXRGLVTHNNFKRSMTPFMNGFAZUKEEQHQZOMJGPCYTTUWGWGTUTTTJMNEHAMWRGNUUDMQMHKPTSV
VHUTJXXSZCGFMNKYUVWTXNHOQMQTHKVCUMTHUTWKRYMCTWTAXFWZARGEUUMVUMJKITLMTQUNFKKUZTTD
VAKLATURENQQDZUVNXIAUVVOUPWXRSMCTFVAXLWTATENOHMVQVJXITUZVQUTFXXYVGGDTAELWZURKLUU
MVQZJERCYTMQAPFGKLVCPDTJELNMATKNOUMVHZHEIGYVZOUGJKTYVTGFZJXYAZNREEOOKZQVJKRTLVZU
WTJKTLMTGWMAX